Question

What will happen when Chlorine gas is passed through dry slaked lime?

Answer 1

Bleaching powder:

• Bleaching powder is Calcium hypochlorite which is an inorganic compound.
• Its formula is ${\mathrm{CaOCl}}_2$.
• It is used for bleaching purposes in industries.

Reaction of Chlorine gas with dry slaked lime:

• When Chlorine gas (${\mathrm{Cl}}_2$) reacts with dry slaked lime ($\mathrm{Ca}{\left(\mathrm{OH}\right)}_2$), it forms bleaching powder or calcium hypochlorite.

$\mathrm{Ca}{\left(\mathrm{OH}\right)}_2\left(s\right)+{\mathrm{Cl}}_2\left(g\right)\to {\mathrm{CaOCl}}_2\left(s\right)+{\mathrm{H}}_2\mathrm{O}\left(l\right)$